Crossword Puzzle Planet dwellers of filmdom

Clue: Planet dwellers of filmdom

Planet dwellers in a 1968 film (APES with 4 letters)
Office conf. (MTG with 3 letters)
Monastery officer (PRIOR with 5 letters)
Annul officially (REPEAL with 6 letters)
It states that a planet's orbit is an ellipse with the Sun at one focus (KEPLERSFIRSTLAW with 15 letters)
Whistler's offering (TUNE with 4 letters)
Jerky doctor's office combo? (SHOTANDABOOR with 12 letters)
The fruit dove is its official bird (GUAM with 4 letters)
Goes offstage again (REEXITS with 7 letters)
Lab offering? (PAW with 3 letters)